Hi!
I started a blog recently, and one of my recent discussions on FFT led me to post a new blog post at https://nor-blog.codeberg.page/posts/2024-06-01-implementing-fft/ exploring some FFT algorithms — more specifically, alternate (potentially better) implementations that not many people are aware of. The contents of this post might be a bit well-known to people who write their own FFT templates, but having a good understanding of FFT should help others too.